Bending-machine



(No Model.) 2 Sheets-Sheet 1.

J. W. ABRAHAMS. BENDING MAGHINE.

No. 570,655. Patented Nov, 3, 1896.

(No Model.) 2 Sheets-Sheet 2.

, J. W. ABRAHAMS.

BENDING MAGHINE.

Patented Nov. 3, 1896.

UNITED STATES PATENT ()FFICE.

ONE-HALF TO HARRY A. MARLIN,

OF PITTSBURG, PENNSYLVANIA.

SENDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 570,655, dated November3, 1896.

Application filed January 13, 1896.

To aZZ whom it may concern.-

Be it known that I, JOHN WILLIAM ABRA- HAMS, a resident of Allegheny, inthe county of Allegheny and State of Pennsylvania, have invented a newand useful Improvement in Bending-Machines; and I do hereby declare thefollowing to be a full, clear, and exact description thereof. Y

Myinvention relates to machines for bend- 1o ing metal, its object,being to provide a machine by which long lengths of sheet metal may bebeaded and accurately bent into shape for eaves-troughs or otherpurposes by one operation.

My invention comprises, generally stated,

a bending-roll, a beading-roll carried by said bending-roll and adaptedto be rotated independently of said bending-roll, and a reciprocatingpresser to bear against said bendingroll when said roll is rotated.

To enable others skilled in the art to make and use myinvention, Iwilldescribe the same more fully, referring to the accompanying drawings, inwhich Figure l is an end view of myiinproved machine. Fig. 2 is a planView. Fig. 3 is an enlarged detail View of the bending-roll and headerwith the metal in position for beading. Fig. 4 is a like view after thebeading 3o operation. Fig. 5 is a like view showing the operation ofbending the metal. Fig. 6 is a perspective View of a portion of beader.Fig. 7 is a section online 7 7, Fig. 2. Fig. 8 is a detail View of oneend of bending-roll.

The letter a represents a suitable frame or support for the severalparts of the machine. Mounted in suitable standards I) on said frame isthe bending-roll c of any suitable diameter and length. At suitabledistances apart on the roll 0 are the brackets d, said brackets havingthe bolts d, which pass through said roll and have their heads withincountersunk openings 0 in said roll, these brackets d having hook-shapedends which inclose the greater part of the beader f and form bearingsfor the said beaderf. This beaderf may be of any suitable diameteraccording to the size of beading desired. A groove or slot 9 is formedin the beader f, within which the edge of the metal to be beaded isinserted. To prevent longitudinal movement on the part of the beadersaid header is provided with the collar h, held in place by set-screwSerial No. 575,264. (N0 model.)

h. This collar is attached to said beader at a point just beyond the endbracket d. Furthermore, the bending-roll c is cutaway at the endadjacent to said collar, as at 7;, to form a recess to receive a portionof the collar h. The header f has the seats j formed at each end thereofto receive the end of handles L for turning said beader.

Secured to the frame a is the foot-lever Z, said lever being normallyheld in its elevated position by the spring m. A rod 11, secured tothe lever Z, passes up into a seat or recess a, formed within the roll0. In this manner the roll 0 maybe locked or held from rotating.

A rod 0 is secured at one end to the lever Z and at its upper end to thecrank 19. This crank 19 is mounted on the shaft q, jour- 7o naled insuitable bearings 'rin the frame a. Mounted on the shaft g at properintervals are the pinions s with teeth .9. The teeth of these pinionsengage with the racks if. The racks t are secured to the presser a, saidpresser extending the entire length of the bending-roll c. The presser"a is supported on the inclined supports a of the frame a, said supportshaving slots (6 formed therein,

within which the bolts 11, passing through the presser, move. In thismanner the presser is moved to and fro when the racks '15 are acted uponby the pinions s.

The forward edge a of the presser u is forked or 'V-shaped, so that whenit is advanced into contact with the bending-roll c it forms two'pointsof contact therewith and conforms more properly with the curve of theroll.

The term bracket as used in the speci- 9o fication is intended toinclude any kind of a support for the header, whetherformed separatetherefrom or integral therewith. It is also apparent that instead of anumber of brackets one long bracket extending the entire length of thebending-roll may be employed with'like effect. Furthermore, the termhook-shaped as applied to the shape of said brackets is intended toinclude any shape which will afford a curved bearing for the header, sothat when said beader is turned within said bearing the beading will beformed therein.

The operation of my improved bendingmachine as applied to themanufacture of eaves-troughs is as follows: The galvanized sheet metalof the proper length and width is inserted with one of its edgesengaging the groove 9 of the beader f. The metal may be readily insertedby starting it from one end of the groove and pushing it along to theopposite end thereof until it strikes the collar h. The insertion of themetal can be accomplished in this manner on account of the hook-shapedends being open at the top and not forming a complete circle. The metalwill then be in the position shown in Fig. 3. By inserting the handles7t within the seats j the operators, one at each end of said beader,turn said header to the position shown in Fig. 4, when the bead isformed. The header, together with the brackets having the hookshapedends, form the heading, said brackets being located near enough to eachother to give the proper curve to the metal when the header is turnedtherein. During this operation the bending-roll c has been locked andprevented from turning by the rod 0t engaging the seat 72' in said roll.The bead having been formed, one of the operators puts his foot on thetreadle and lowers the lever Z. By this operation the rod 77. isWithdrawn and the bending-roll c is free to rotate. At the same time therod 0 is lowered, operating the crank 19 and turning the pinions s. Thisacts to advance the presser ttuntil its forked edge 11/ is brought intocontact with the roll 0, or, rather, into contact with the metalinterposed. The bending-roll c is then turned by suitable handles to theposition shown in Fig. 5, when the eaves-trough is completed andwithdrawn from the machine. Just as soon as the foot is removed from thetreadle the rod or again locks the bending-roll and the pinions s drawback the presser it. In this manner without removing the metal from themachine it is accurately beaded and bent to shape. The pressercontacting with the bending-roll at two points produces a perfect curveon the metal corresponding to the curve of the roll, while the bendingoperation is done with great rapidity and ease.

WVhat I claim as my invention, and desire to secure by Letters Patent,is

1. In a bending-machine the combination of a bending-roll, bracketsarranged at suitable intervals along said roll, said brackets havinghook-shaped ends, the beading-roll fitting within said brackets andadapted to rotate independently of said bendin g-roll,substantially asset forth.

2. In a bending-machine, the combination of a bending-roll, mechanismfor locking said bending-roll, brackets arranged at suitable intervalsalong said roll, said brackets having hook-shaped ends, a beading-rollfitting within said brackets adapted to rotate independently of saidbending-roll, substantially as set forth.

3. In a bending-machine, the combination of a bending-roll, brackets onsaid bendingroll having bolts extending through the same,

said brackets having hook-shaped ends and a beading-roll fitting withinsaid brackets and adapted to rotate independently of said roll,substantially as set forth.

-1-. In a bending-machine, the combination of a bending-roll, a headercarried thereby adapted to rotate independently of said bending-roll,and a reciprocating presser having a forked edge adapted to bear againstsaid roll,- substantially as set forth.

5. In a bending-machine, the combination of a bending-roll, a headercarried thereby adapted to rotateindependently of said bending-roll, anda reciprocating presser, substantially as set forth.

6. In a bending-machine, the combination of a bending-roll, a headercarried thereby adapted to rotate independently of said bending-roll, areciprocating presser, and mechanism 'for locking said bending-roll andreleasing the same and foroperating said presser at the same time,substantially as set forth.

7. In a bending-machine, the combination with a suitable frame, of abending roll mounted therein, a header carried thereby adapted to rotateindependently of saidbending-roll, a lever, connections between saidlever and bending-roll for locking the same, a reciprocating presser,and connections be tween said lever and presser, substantially as setforth.

8. In a bending-machine, the combination with a suitable frame of abendingroll mounted therein, a header carried thereby adapted to rotateindependently of said bending-roll, a lever, connections between saidlever and said roll for locking the same, a presser having racksthereon, pinions engaging said racks, and connections between saidpinions and said lever, substantially as set forth.

9. In a bending-machine, the combination with a suitable frame, of abending roll mounted therein, a beader carried thereby adapted to rotateindependently of said bend ing-roll, a lever, connections between saidlever and said roll for locking the same, a presser having racksthereon, a shaft carrying pinions engaging said racks, a crank on saidshaft, and a rod connecting said crank and lever, substantially as setforth.

10. In a bending-machine, the combination with a suitable frame, of abending roll mounted therein, a header carried thereby adapted to rotateindependently of said bending-roll, a lever, a rod extending from saidlever into a recess in said bending-roll, a reciprocating presser, andconnections between said lever and said presser for operating the same,substantially as set forth.

In testimony whereof I, the said J OHN W'IL- LIAM ABRAHAMs, havehereunto set my hand.

JOHN WILLIAM ABRAHAMS.

Witnesses:

ROBT. D. TOTTEN, ROBERT C. TOTTEN.

IIO

